<style type="text/css">
    .container {
        margin-top:10%;
    }
    .container, .input-form {
        text-align: center;
    }

</style>

<script type="application/javascript">
    var qrcode_id=localStorage.getItem("${.live_code_md5}")
    if(qrcode_id){
        location.href="/qrcodePage/showqrcode?id="+qrcode_id+"&key="+"${.live_code_md5}"
    }else{
        localStorage.setItem("${.live_code_md5}","${.qrcode_id_md5}")
        location.href="/qrcodePage/showqrcode?newid=${.qrcode_id_md5}&live_code_md5=${.live_code_md5}"
    }
</script>